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Quasinormal Modes of Charged Fields in Reissner-Nordstrom Backgrounds by Borel-Pade Summation of Bender-Wu Series

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arxiv 1912.05553 v2 pith:XWE43YT2 submitted 2019-12-11 gr-qc hep-th

Dan Stefan Eniceicu , Matthew Reece This is my paper · ORCID
classification gr-qchep-th
keywords bender-wufrequenciesmodesquasinormalblackborel-padechargedextremal
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We extend recent work of Hatsuda on the computation of quasinormal mode frequencies via analytic continuation of bound state energies and Borel-Pade resummation of the Bender-Wu perturbation series to the case of charged fields in the background of Reissner-Nordstrom black holes. We compare the quasinormal mode frequencies obtained in this manner to calculations using Leaver's method of continued fractions, and find good agreement for damped modes (DMs) with imaginary part remaining finite in the extremal limit. We also present numerical evidence that the frequencies of certain zero-damped modes (ZDMs) with imaginary part tending to zero in the extremal limit can be computed when constructing the Bender-Wu expansion about a peak of the potential inside the outer horizon of the black hole.

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Cited by 4 Pith papers

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